What Comes Next in The Sequence: If 1 + 5 = 18; 4 + 20 = ?
Solve this number series riddle and leave your answers in the comment section;
What Comes next in the sequence;
1 + 5 = 18
2 + 10 = 36
3 + 15 = 54
4 + 20 = ??
So were you able to solve the riddle? Leave your answers in the comment section below.
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Answer:
The logic in the riddle is as follows;
add the numbers and then multiply it by 3.
So putting this into the equations lets see if it works;
1 + 5 = (1 + 5) x 3 = 6 x 3 = 18
2 + 10 = (2 +10) x 3 = 12 x 3 = 36
3 + 15 = (3 + 15) x 3 = 18 x 3 = 54
Therefore
4 + 20 = (4 + 20) x 3 = 24 x 3 = 72
Hence;
Answer = 72